Hi there!
I have only 2 rigs (2 workers) and it should be free. But today I`ve got a notice to pay $0.12 per day. Could you please explain about this fee? Thanks a lot!
Explanation found.
Whenever you go above 2 workers it will auto switch to the paid tier, and when going back down to 2 or less you need to manually switch back. you can switch back to free tier once every 48 hours if going back and forth.